*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:#f5f7fa;color:#333}.navbar{display:flex;align-items:center;gap:2rem;padding:1rem 2rem;background:#1f4e79;color:#fff}.navbar a{color:#fff;text-decoration:none;font-weight:500}.brand{font-size:1.2rem;font-weight:700}main{max-width:1200px;margin:0 auto;padding:2rem}